Delete repeated code line 

https://github.com/riolet/nope.c/issues/40
Merge pull request #41 from truongminh/patch-1

Delete repeated code lines
Fixing Makefile
Fixing thread logic
Fix grammar and spelling errors.
Merge pull request #42 from jimpoulakos/patch-1

Fix grammar and spelling errors.
Tackling C10K
Trying to fix lock elision problem
merge
code format with -ppi 4
FCNTL_NONBLOCK macro